Current File : /home3/z1b8p1s5/segurocelular.uy/wp-includes/ID3/module.audio-video.flv.php
<?php
/////////////////////////////////////////////////////////////////
/// getID3() by James Heinrich <info@getid3.org>               //
//  available at https://github.com/JamesHeinrich/getID3       //
//            or https://www.getid3.org                        //
//            or http://getid3.sourceforge.net                 //
//  see readme.txt for more details                            //
/////////////////////////////////////////////////////////////////
//                                                             //
// module.audio-video.flv.php                                  //
// module for analyzing Shockwave Flash Video files            //
// dependencies: NONE                                          //
//                                                             //
/////////////////////////////////////////////////////////////////
//                                                             //
//  FLV module by Seth Kaufman <sethØwhirl-i-gig*com>          //
//                                                             //
//  * version 0.1 (26 June 2005)                               //
//                                                             //
//  * version 0.1.1 (15 July 2005)                             //
//  minor modifications by James Heinrich <info@getid3.org>    //
//                                                             //
//  * version 0.2 (22 February 2006)                           //
//  Support for On2 VP6 codec and meta information             //
//    by Steve Webster <steve.websterØfeaturecreep*com>        //
//                                                             //
//  * version 0.3 (15 June 2006)                               //
//  Modified to not read entire file into memory               //
//    by James Heinrich <info@getid3.org>                      //
//                                                             //
//  * version 0.4 (07 December 2007)                           //
//  Bugfixes for incorrectly parsed FLV dimensions             //
//    and incorrect parsing of onMetaTag                       //
//    by Evgeny Moysevich <moysevichØgmail*com>                //
//                                                             //
//  * version 0.5 (21 May 2009)                                //
//  Fixed parsing of audio tags and added additional codec     //
//    details. The duration is now read from onMetaTag (if     //
//    exists), rather than parsing whole file                  //
//    by Nigel Barnes <ngbarnesØhotmail*com>                   //
//                                                             //
//  * version 0.6 (24 May 2009)                                //
//  Better parsing of files with h264 video                    //
//    by Evgeny Moysevich <moysevichØgmail*com>                //
//                                                             //
//  * version 0.6.1 (30 May 2011)                              //
//    prevent infinite loops in expGolombUe()                  //
//                                                             //
//  * version 0.7.0 (16 Jul 2013)                              //
//  handle GETID3_FLV_VIDEO_VP6FLV_ALPHA                       //
//  improved AVCSequenceParameterSetReader::readData()         //
//    by Xander Schouwerwou <schouwerwouØgmail*com>            //
//                                                            ///
/////////////////////////////////////////////////////////////////

if (!defined('GETID3_INCLUDEPATH')) { // prevent path-exposing attacks that access modules directly on public webservers
	exit;
}

define('GETID3_FLV_TAG_AUDIO',          8);
define('GETID3_FLV_TAG_VIDEO',          9);
define('GETID3_FLV_TAG_META',          18);

define('GETID3_FLV_VIDEO_H263',         2);
define('GETID3_FLV_VIDEO_SCREEN',       3);
define('GETID3_FLV_VIDEO_VP6FLV',       4);
define('GETID3_FLV_VIDEO_VP6FLV_ALPHA', 5);
define('GETID3_FLV_VIDEO_SCREENV2',     6);
define('GETID3_FLV_VIDEO_H264',         7);

define('H264_AVC_SEQUENCE_HEADER',          0);
define('H264_PROFILE_BASELINE',            66);
define('H264_PROFILE_MAIN',                77);
define('H264_PROFILE_EXTENDED',            88);
define('H264_PROFILE_HIGH',               100);
define('H264_PROFILE_HIGH10',             110);
define('H264_PROFILE_HIGH422',            122);
define('H264_PROFILE_HIGH444',            144);
define('H264_PROFILE_HIGH444_PREDICTIVE', 244);

class getid3_flv extends getid3_handler
{
	const magic = 'FLV';

	/**
	 * Break out of the loop if too many frames have been scanned; only scan this
	 * many if meta frame does not contain useful duration.
	 *
	 * @var int
	 */
	public $max_frames = 100000;

	/**
	 * @return bool
	 */
	public function Analyze() {
		$info = &$this->getid3->info;

		$this->fseek($info['avdataoffset']);

		$FLVdataLength = $info['avdataend'] - $info['avdataoffset'];
		$FLVheader = $this->fread(5);

		$info['fileformat'] = 'flv';
		$info['flv']['header']['signature'] =                           substr($FLVheader, 0, 3);
		$info['flv']['header']['version']   = getid3_lib::BigEndian2Int(substr($FLVheader, 3, 1));
		$TypeFlags                          = getid3_lib::BigEndian2Int(substr($FLVheader, 4, 1));

		if ($info['flv']['header']['signature'] != self::magic) {
			$this->error('Expecting "'.getid3_lib::PrintHexBytes(self::magic).'" at offset '.$info['avdataoffset'].', found "'.getid3_lib::PrintHexBytes($info['flv']['header']['signature']).'"');
			unset($info['flv'], $info['fileformat']);
			return false;
		}

		$info['flv']['header']['hasAudio'] = (bool) ($TypeFlags & 0x04);
		$info['flv']['header']['hasVideo'] = (bool) ($TypeFlags & 0x01);

		$FrameSizeDataLength = getid3_lib::BigEndian2Int($this->fread(4));
		$FLVheaderFrameLength = 9;
		if ($FrameSizeDataLength > $FLVheaderFrameLength) {
			$this->fseek($FrameSizeDataLength - $FLVheaderFrameLength, SEEK_CUR);
		}
		$Duration = 0;
		$found_video = false;
		$found_audio = false;
		$found_meta  = false;
		$found_valid_meta_playtime = false;
		$tagParseCount = 0;
		$info['flv']['framecount'] = array('total'=>0, 'audio'=>0, 'video'=>0);
		$flv_framecount = &$info['flv']['framecount'];
		while ((($this->ftell() + 16) < $info['avdataend']) && (($tagParseCount++ <= $this->max_frames) || !$found_valid_meta_playtime))  {
			$ThisTagHeader = $this->fread(16);

			$PreviousTagLength = getid3_lib::BigEndian2Int(substr($ThisTagHeader,  0, 4));
			$TagType           = getid3_lib::BigEndian2Int(substr($ThisTagHeader,  4, 1));
			$DataLength        = getid3_lib::BigEndian2Int(substr($ThisTagHeader,  5, 3));
			$Timestamp         = getid3_lib::BigEndian2Int(substr($ThisTagHeader,  8, 3));
			$LastHeaderByte    = getid3_lib::BigEndian2Int(substr($ThisTagHeader, 15, 1));
			$NextOffset = $this->ftell() - 1 + $DataLength;
			if ($Timestamp > $Duration) {
				$Duration = $Timestamp;
			}

			$flv_framecount['total']++;
			switch ($TagType) {
				case GETID3_FLV_TAG_AUDIO:
					$flv_framecount['audio']++;
					if (!$found_audio) {
						$found_audio = true;
						$info['flv']['audio']['audioFormat']     = ($LastHeaderByte >> 4) & 0x0F;
						$info['flv']['audio']['audioRate']       = ($LastHeaderByte >> 2) & 0x03;
						$info['flv']['audio']['audioSampleSize'] = ($LastHeaderByte >> 1) & 0x01;
						$info['flv']['audio']['audioType']       =  $LastHeaderByte       & 0x01;
					}
					break;

				case GETID3_FLV_TAG_VIDEO:
					$flv_framecount['video']++;
					if (!$found_video) {
						$found_video = true;
						$info['flv']['video']['videoCodec'] = $LastHeaderByte & 0x07;

						$FLVvideoHeader = $this->fread(11);
						$PictureSizeEnc = array();

						if ($info['flv']['video']['videoCodec'] == GETID3_FLV_VIDEO_H264) {
							// this code block contributed by: moysevichØgmail*com

							$AVCPacketType = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 0, 1));
							if ($AVCPacketType == H264_AVC_SEQUENCE_HEADER) {
								//	read AVCDecoderConfigurationRecord
								$configurationVersion       = getid3_lib::BigEndian2Int(substr($FLVvideoHeader,  4, 1));
								$AVCProfileIndication       = getid3_lib::BigEndian2Int(substr($FLVvideoHeader,  5, 1));
								$profile_compatibility      = getid3_lib::BigEndian2Int(substr($FLVvideoHeader,  6, 1));
								$lengthSizeMinusOne         = getid3_lib::BigEndian2Int(substr($FLVvideoHeader,  7, 1));
								$numOfSequenceParameterSets = getid3_lib::BigEndian2Int(substr($FLVvideoHeader,  8, 1));

								if (($numOfSequenceParameterSets & 0x1F) != 0) {
									//	there is at least one SequenceParameterSet
									//	read size of the first SequenceParameterSet
									//$spsSize = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 9, 2));
									$spsSize = getid3_lib::LittleEndian2Int(substr($FLVvideoHeader, 9, 2));
									//	read the first SequenceParameterSet
									$sps = $this->fread($spsSize);
									if (strlen($sps) == $spsSize) {	//	make sure that whole SequenceParameterSet was red
										$spsReader = new AVCSequenceParameterSetReader($sps);
										$spsReader->readData();
										$info['video']['resolution_x'] = $spsReader->getWidth();
										$info['video']['resolution_y'] = $spsReader->getHeight();
									}
								}
							}
							// end: moysevichØgmail*com

						} elseif ($info['flv']['video']['videoCodec'] == GETID3_FLV_VIDEO_H263) {

							$PictureSizeType = (getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 3, 2))) >> 7;
							$PictureSizeType = $PictureSizeType & 0x0007;
							$info['flv']['header']['videoSizeType'] = $PictureSizeType;
							switch ($PictureSizeType) {
								case 0:
									//$PictureSizeEnc = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 5, 2));
									//$PictureSizeEnc <<= 1;
									//$info['video']['resolution_x'] = ($PictureSizeEnc & 0xFF00) >> 8;
									//$PictureSizeEnc = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 6, 2));
									//$PictureSizeEnc <<= 1;
									//$info['video']['resolution_y'] = ($PictureSizeEnc & 0xFF00) >> 8;

									$PictureSizeEnc['x'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 4, 2)) >> 7;
									$PictureSizeEnc['y'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 5, 2)) >> 7;
									$info['video']['resolution_x'] = $PictureSizeEnc['x'] & 0xFF;
									$info['video']['resolution_y'] = $PictureSizeEnc['y'] & 0xFF;
									break;

								case 1:
									$PictureSizeEnc['x'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 4, 3)) >> 7;
									$PictureSizeEnc['y'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 6, 3)) >> 7;
									$info['video']['resolution_x'] = $PictureSizeEnc['x'] & 0xFFFF;
									$info['video']['resolution_y'] = $PictureSizeEnc['y'] & 0xFFFF;
									break;

								case 2:
									$info['video']['resolution_x'] = 352;
									$info['video']['resolution_y'] = 288;
									break;

								case 3:
									$info['video']['resolution_x'] = 176;
									$info['video']['resolution_y'] = 144;
									break;

								case 4:
									$info['video']['resolution_x'] = 128;
									$info['video']['resolution_y'] = 96;
									break;

								case 5:
									$info['video']['resolution_x'] = 320;
									$info['video']['resolution_y'] = 240;
									break;

								case 6:
									$info['video']['resolution_x'] = 160;
									$info['video']['resolution_y'] = 120;
									break;

								default:
									$info['video']['resolution_x'] = 0;
									$info['video']['resolution_y'] = 0;
									break;

							}

						} elseif ($info['flv']['video']['videoCodec'] ==  GETID3_FLV_VIDEO_VP6FLV_ALPHA) {

							/* contributed by schouwerwouØgmail*com */
							if (!isset($info['video']['resolution_x'])) { // only when meta data isn't set
								$PictureSizeEnc['x'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 6, 2));
								$PictureSizeEnc['y'] = getid3_lib::BigEndian2Int(substr($FLVvideoHeader, 7, 2));
								$info['video']['resolution_x'] = ($PictureSizeEnc['x'] & 0xFF) << 3;
								$info['video']['resolution_y'] = ($PictureSizeEnc['y'] & 0xFF) << 3;
							}
							/* end schouwerwouØgmail*com */

						}
						if (!empty($info['video']['resolution_x']) && !empty($info['video']['resolution_y'])) {
							$info['video']['pixel_aspect_ratio'] = $info['video']['resolution_x'] / $info['video']['resolution_y'];
						}
					}
					break;

				// Meta tag
				case GETID3_FLV_TAG_META:
					if (!$found_meta) {
						$found_meta = true;
						$this->fseek(-1, SEEK_CUR);
						$datachunk = $this->fread($DataLength);
						$AMFstream = new AMFStream($datachunk);
						$reader = new AMFReader($AMFstream);
						$eventName = $reader->readData();
						$info['flv']['meta'][$eventName] = $reader->readData();
						unset($reader);

						$copykeys = array('framerate'=>'frame_rate', 'width'=>'resolution_x', 'height'=>'resolution_y', 'audiodatarate'=>'bitrate', 'videodatarate'=>'bitrate');
						foreach ($copykeys as $sourcekey => $destkey) {
							if (isset($info['flv']['meta']['onMetaData'][$sourcekey])) {
								switch ($sourcekey) {
									case 'width':
									case 'height':
										$info['video'][$destkey] = intval(round($info['flv']['meta']['onMetaData'][$sourcekey]));
										break;
									case 'audiodatarate':
										$info['audio'][$destkey] = getid3_lib::CastAsInt(round($info['flv']['meta']['onMetaData'][$sourcekey] * 1000));
										break;
									case 'videodatarate':
									case 'frame_rate':
									default:
										$info['video'][$destkey] = $info['flv']['meta']['onMetaData'][$sourcekey];
										break;
								}
							}
						}
						if (!empty($info['flv']['meta']['onMetaData']['duration'])) {
							$found_valid_meta_playtime = true;
						}
					}
					break;

				default:
					// noop
					break;
			}
			$this->fseek($NextOffset);
		}

		$info['playtime_seconds'] = $Duration / 1000;
		if ($info['playtime_seconds'] > 0) {
			$info['bitrate'] = (($info['avdataend'] - $info['avdataoffset']) * 8) / $info['playtime_seconds'];
		}

		if ($info['flv']['header']['hasAudio']) {
			$info['audio']['codec']           =   self::audioFormatLookup($info['flv']['audio']['audioFormat']);
			$info['audio']['sample_rate']     =     self::audioRateLookup($info['flv']['audio']['audioRate']);
			$info['audio']['bits_per_sample'] = self::audioBitDepthLookup($info['flv']['audio']['audioSampleSize']);

			$info['audio']['channels']   =  $info['flv']['audio']['audioType'] + 1; // 0=mono,1=stereo
			$info['audio']['lossless']   = ($info['flv']['audio']['audioFormat'] ? false : true); // 0=uncompressed
			$info['audio']['dataformat'] = 'flv';
		}
		if (!empty($info['flv']['header']['hasVideo'])) {
			$info['video']['codec']      = self::videoCodecLookup($info['flv']['video']['videoCodec']);
			$info['video']['dataformat'] = 'flv';
			$info['video']['lossless']   = false;
		}

		// Set information from meta
		if (!empty($info['flv']['meta']['onMetaData']['duration'])) {
			$info['playtime_seconds'] = $info['flv']['meta']['onMetaData']['duration'];
			$info['bitrate'] = (($info['avdataend'] - $info['avdataoffset']) * 8) / $info['playtime_seconds'];
		}
		if (isset($info['flv']['meta']['onMetaData']['audiocodecid'])) {
			$info['audio']['codec'] = self::audioFormatLookup($info['flv']['meta']['onMetaData']['audiocodecid']);
		}
		if (isset($info['flv']['meta']['onMetaData']['videocodecid'])) {
			$info['video']['codec'] = self::videoCodecLookup($info['flv']['meta']['onMetaData']['videocodecid']);
		}
		return true;
	}

	/**
	 * @param int $id
	 *
	 * @return string|false
	 */
	public static function audioFormatLookup($id) {
		static $lookup = array(
			0  => 'Linear PCM, platform endian',
			1  => 'ADPCM',
			2  => 'mp3',
			3  => 'Linear PCM, little endian',
			4  => 'Nellymoser 16kHz mono',
			5  => 'Nellymoser 8kHz mono',
			6  => 'Nellymoser',
			7  => 'G.711A-law logarithmic PCM',
			8  => 'G.711 mu-law logarithmic PCM',
			9  => 'reserved',
			10 => 'AAC',
			11 => 'Speex',
			12 => false, // unknown?
			13 => false, // unknown?
			14 => 'mp3 8kHz',
			15 => 'Device-specific sound',
		);
		return (isset($lookup[$id]) ? $lookup[$id] : false);
	}

	/**
	 * @param int $id
	 *
	 * @return int|false
	 */
	public static function audioRateLookup($id) {
		static $lookup = array(
			0 =>  5500,
			1 => 11025,
			2 => 22050,
			3 => 44100,
		);
		return (isset($lookup[$id]) ? $lookup[$id] : false);
	}

	/**
	 * @param int $id
	 *
	 * @return int|false
	 */
	public static function audioBitDepthLookup($id) {
		static $lookup = array(
			0 =>  8,
			1 => 16,
		);
		return (isset($lookup[$id]) ? $lookup[$id] : false);
	}

	/**
	 * @param int $id
	 *
	 * @return string|false
	 */
	public static function videoCodecLookup($id) {
		static $lookup = array(
			GETID3_FLV_VIDEO_H263         => 'Sorenson H.263',
			GETID3_FLV_VIDEO_SCREEN       => 'Screen video',
			GETID3_FLV_VIDEO_VP6FLV       => 'On2 VP6',
			GETID3_FLV_VIDEO_VP6FLV_ALPHA => 'On2 VP6 with alpha channel',
			GETID3_FLV_VIDEO_SCREENV2     => 'Screen video v2',
			GETID3_FLV_VIDEO_H264         => 'Sorenson H.264',
		);
		return (isset($lookup[$id]) ? $lookup[$id] : false);
	}
}

class AMFStream
{
	/**
	 * @var string
	 */
	public $bytes;

	/**
	 * @var int
	 */
	public $pos;

	/**
	 * @param string $bytes
	 */
	public function __construct(&$bytes) {
		$this->bytes =& $bytes;
		$this->pos = 0;
	}

	/**
	 * @return int
	 */
	public function readByte() { //  8-bit
		return ord(substr($this->bytes, $this->pos++, 1));
	}

	/**
	 * @return int
	 */
	public function readInt() { // 16-bit
		return ($this->readByte() << 8) + $this->readByte();
	}

	/**
	 * @return int
	 */
	public function readLong() { // 32-bit
		return ($this->readByte() << 24) + ($this->readByte() << 16) + ($this->readByte() << 8) + $this->readByte();
	}

	/**
	 * @return float|false
	 */
	public function readDouble() {
		return getid3_lib::BigEndian2Float($this->read(8));
	}

	/**
	 * @return string
	 */
	public function readUTF() {
		$length = $this->readInt();
		return $this->read($length);
	}

	/**
	 * @return string
	 */
	public function readLongUTF() {
		$length = $this->readLong();
		return $this->read($length);
	}

	/**
	 * @param int $length
	 *
	 * @return string
	 */
	public function read($length) {
		$val = substr($this->bytes, $this->pos, $length);
		$this->pos += $length;
		return $val;
	}

	/**
	 * @return int
	 */
	public function peekByte() {
		$pos = $this->pos;
		$val = $this->readByte();
		$this->pos = $pos;
		return $val;
	}

	/**
	 * @return int
	 */
	public function peekInt() {
		$pos = $this->pos;
		$val = $this->readInt();
		$this->pos = $pos;
		return $val;
	}

	/**
	 * @return int
	 */
	public function peekLong() {
		$pos = $this->pos;
		$val = $this->readLong();
		$this->pos = $pos;
		return $val;
	}

	/**
	 * @return float|false
	 */
	public function peekDouble() {
		$pos = $this->pos;
		$val = $this->readDouble();
		$this->pos = $pos;
		return $val;
	}

	/**
	 * @return string
	 */
	public function peekUTF() {
		$pos = $this->pos;
		$val = $this->readUTF();
		$this->pos = $pos;
		return $val;
	}

	/**
	 * @return string
	 */
	public function peekLongUTF() {
		$pos = $this->pos;
		$val = $this->readLongUTF();
		$this->pos = $pos;
		return $val;
	}
}

class AMFReader
{
	/**
	* @var AMFStream
	*/
	public $stream;

	/**
	 * @param AMFStream $stream
	 */
	public function __construct(AMFStream $stream) {
		$this->stream = $stream;
	}

	/**
	 * @return mixed
	 */
	public function readData() {
		$value = null;

		$type = $this->stream->readByte();
		switch ($type) {

			// Double
			case 0:
				$value = $this->readDouble();
			break;

			// Boolean
			case 1:
				$value = $this->readBoolean();
				break;

			// String
			case 2:
				$value = $this->readString();
				break;

			// Object
			case 3:
				$value = $this->readObject();
				break;

			// null
			case 6:
				return null;

			// Mixed array
			case 8:
				$value = $this->readMixedArray();
				break;

			// Array
			case 10:
				$value = $this->readArray();
				break;

			// Date
			case 11:
				$value = $this->readDate();
				break;

			// Long string
			case 13:
				$value = $this->readLongString();
				break;

			// XML (handled as string)
			case 15:
				$value = $this->readXML();
				break;

			// Typed object (handled as object)
			case 16:
				$value = $this->readTypedObject();
				break;

			// Long string
			default:
				$value = '(unknown or unsupported data type)';
				break;
		}

		return $value;
	}

	/**
	 * @return float|false
	 */
	public function readDouble() {
		return $this->stream->readDouble();
	}

	/**
	 * @return bool
	 */
	public function readBoolean() {
		return $this->stream->readByte() == 1;
	}

	/**
	 * @return string
	 */
	public function readString() {
		return $this->stream->readUTF();
	}

	/**
	 * @return array
	 */
	public function readObject() {
		// Get highest numerical index - ignored
//		$highestIndex = $this->stream->readLong();

		$data = array();
		$key = null;

		while ($key = $this->stream->readUTF()) {
			$data[$key] = $this->readData();
		}
		// Mixed array record ends with empty string (0x00 0x00) and 0x09
		if (($key == '') && ($this->stream->peekByte() == 0x09)) {
			// Consume byte
			$this->stream->readByte();
		}
		return $data;
	}

	/**
	 * @return array
	 */
	public function readMixedArray() {
		// Get highest numerical index - ignored
		$highestIndex = $this->stream->readLong();

		$data = array();
		$key = null;

		while ($key = $this->stream->readUTF()) {
			if (is_numeric($key)) {
				$key = (int) $key;
			}
			$data[$key] = $this->readData();
		}
		// Mixed array record ends with empty string (0x00 0x00) and 0x09
		if (($key == '') && ($this->stream->peekByte() == 0x09)) {
			// Consume byte
			$this->stream->readByte();
		}

		return $data;
	}

	/**
	 * @return array
	 */
	public function readArray() {
		$length = $this->stream->readLong();
		$data = array();

		for ($i = 0; $i < $length; $i++) {
			$data[] = $this->readData();
		}
		return $data;
	}

	/**
	 * @return float|false
	 */
	public function readDate() {
		$timestamp = $this->stream->readDouble();
		$timezone = $this->stream->readInt();
		return $timestamp;
	}

	/**
	 * @return string
	 */
	public function readLongString() {
		return $this->stream->readLongUTF();
	}

	/**
	 * @return string
	 */
	public function readXML() {
		return $this->stream->readLongUTF();
	}

	/**
	 * @return array
	 */
	public function readTypedObject() {
		$className = $this->stream->readUTF();
		return $this->readObject();
	}
}

class AVCSequenceParameterSetReader
{
	/**
	 * @var string
	 */
	public $sps;
	public $start = 0;
	public $currentBytes = 0;
	public $currentBits = 0;

	/**
	 * @var int
	 */
	public $width;

	/**
	 * @var int
	 */
	public $height;

	/**
	 * @param string $sps
	 */
	public function __construct($sps) {
		$this->sps = $sps;
	}

	public function readData() {
		$this->skipBits(8);
		$this->skipBits(8);
		$profile = $this->getBits(8);                               // read profile
		if ($profile > 0) {
			$this->skipBits(8);
			$level_idc = $this->getBits(8);                         // level_idc
			$this->expGolombUe();                                   // seq_parameter_set_id // sps
			$this->expGolombUe();                                   // log2_max_frame_num_minus4
			$picOrderType = $this->expGolombUe();                   // pic_order_cnt_type
			if ($picOrderType == 0) {
				$this->expGolombUe();                               // log2_max_pic_order_cnt_lsb_minus4
			} elseif ($picOrderType == 1) {
				$this->skipBits(1);                                 // delta_pic_order_always_zero_flag
				$this->expGolombSe();                               // offset_for_non_ref_pic
				$this->expGolombSe();                               // offset_for_top_to_bottom_field
				$num_ref_frames_in_pic_order_cnt_cycle = $this->expGolombUe(); // num_ref_frames_in_pic_order_cnt_cycle
				for ($i = 0; $i < $num_ref_frames_in_pic_order_cnt_cycle; $i++) {
					$this->expGolombSe();                           // offset_for_ref_frame[ i ]
				}
			}
			$this->expGolombUe();                                   // num_ref_frames
			$this->skipBits(1);                                     // gaps_in_frame_num_value_allowed_flag
			$pic_width_in_mbs_minus1 = $this->expGolombUe();        // pic_width_in_mbs_minus1
			$pic_height_in_map_units_minus1 = $this->expGolombUe(); // pic_height_in_map_units_minus1

			$frame_mbs_only_flag = $this->getBits(1);               // frame_mbs_only_flag
			if ($frame_mbs_only_flag == 0) {
				$this->skipBits(1);                                 // mb_adaptive_frame_field_flag
			}
			$this->skipBits(1);                                     // direct_8x8_inference_flag
			$frame_cropping_flag = $this->getBits(1);               // frame_cropping_flag

			$frame_crop_left_offset   = 0;
			$frame_crop_right_offset  = 0;
			$frame_crop_top_offset    = 0;
			$frame_crop_bottom_offset = 0;

			if ($frame_cropping_flag) {
				$frame_crop_left_offset   = $this->expGolombUe();   // frame_crop_left_offset
				$frame_crop_right_offset  = $this->expGolombUe();   // frame_crop_right_offset
				$frame_crop_top_offset    = $this->expGolombUe();   // frame_crop_top_offset
				$frame_crop_bottom_offset = $this->expGolombUe();   // frame_crop_bottom_offset
			}
			$this->skipBits(1);                                     // vui_parameters_present_flag
			// etc

			$this->width  = (($pic_width_in_mbs_minus1 + 1) * 16) - ($frame_crop_left_offset * 2) - ($frame_crop_right_offset * 2);
			$this->height = ((2 - $frame_mbs_only_flag) * ($pic_height_in_map_units_minus1 + 1) * 16) - ($frame_crop_top_offset * 2) - ($frame_crop_bottom_offset * 2);
		}
	}

	/**
	 * @param int $bits
	 */
	public function skipBits($bits) {
		$newBits = $this->currentBits + $bits;
		$this->currentBytes += (int)floor($newBits / 8);
		$this->currentBits = $newBits % 8;
	}

	/**
	 * @return int
	 */
	public function getBit() {
		$result = (getid3_lib::BigEndian2Int(substr($this->sps, $this->currentBytes, 1)) >> (7 - $this->currentBits)) & 0x01;
		$this->skipBits(1);
		return $result;
	}

	/**
	 * @param int $bits
	 *
	 * @return int
	 */
	public function getBits($bits) {
		$result = 0;
		for ($i = 0; $i < $bits; $i++) {
			$result = ($result << 1) + $this->getBit();
		}
		return $result;
	}

	/**
	 * @return int
	 */
	public function expGolombUe() {
		$significantBits = 0;
		$bit = $this->getBit();
		while ($bit == 0) {
			$significantBits++;
			$bit = $this->getBit();

			if ($significantBits > 31) {
				// something is broken, this is an emergency escape to prevent infinite loops
				return 0;
			}
		}
		return (1 << $significantBits) + $this->getBits($significantBits) - 1;
	}

	/**
	 * @return int
	 */
	public function expGolombSe() {
		$result = $this->expGolombUe();
		if (($result & 0x01) == 0) {
			return -($result >> 1);
		} else {
			return ($result + 1) >> 1;
		}
	}

	/**
	 * @return int
	 */
	public function getWidth() {
		return $this->width;
	}

	/**
	 * @return int
	 */
	public function getHeight() {
		return $this->height;
	}
}
Seguro Celular
Home business sonyw300 6 de febrero de 2020
¡Protege tu inversión!

Obtén cobertura contra robo y daños para tu celular hoy mismo

Contratar ahora!
No arriesgues tu celular

Asegúralo ahora y evita sorpresas desagradables

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¿Estás preparado para los imprevistos?

Asegura tu celular contra robos y daños en un solo clic

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SEGURO PARA CUALQUIER MOMENTO
Evita cualquier situación con nuestro seguro para celular.

Contar con un seguro para celular te brinda una protección integral contra situaciones comunes como robo, accidentes y pérdida. No solo te ahorrará dinero en reparaciones o reemplazos, sino que también te proporcionará la tranquilidad de saber que estás respaldado en caso de cualquier eventualidad. Es una inversión inteligente para salvaguardar tu dispositivo, tus datos y tu tranquilidad.

De viaje
Protegido siempre ante cualquier imprevisto
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Robo
Asegura tu equipo ante un posible robo
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Accidentes
No pases un mal momento, protege tu dispositivo
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¿Porqué seguro celular es para ti?
Nos comprometemos en brindarte la mejor protección para tu dispositivo
Cobertura mundial

Sea cual sea el problema estamos aquí para proteger tu inversión y brindarte la tranquilidad que necesitas.

Proceso de reclamación fácil y rápido

Sabemos que necesitas una solución rápida en caso de cualquier incidente.

Opciones personalizadas:

Ofrecemos opciones flexibles que se adaptan a tus requisitos individuales.

Atención al cliente excepcional

Estamos disponible para responder y brindarte asistencia personalizada en todo momento.

Tu tranquilidad está a
solo un clic de distancia

Protege tu dispositivo de cualquier imprevisto
Haz clic aquí
TESTIMONIOS
¿Qué dicen nuestros
valiosos clientes?
"¡Increíble servicio de seguro para celular! Rápido, eficiente y confiable. Mi reclamo fue procesado sin problemas y recibí un reemplazo de mi teléfono en tiempo récord. ¡Gracias por brindar una excelente protección para mis dispositivos!"
male1085054890319
Herman Miller
"Me encanta la tranquilidad que me brinda su servicio de seguro para celular. Sé que mi dispositivo está protegido contra cualquier daño accidental o robo. Además, el proceso de reclamación es sencillo. Super recomendado!
female1021755931884
Sofia Millan
"Me ha salvado en más de una ocasión. El personal siempre está dispuesto a ayudar y resolver cualquier problema que surja. Gracias a su servicio, puedo disfrutar de mi teléfono sin preocupaciones.
male20131085934506012
Alexander Rodriguez